Signaling system for railway-trains.



E. H. BOUDWIN.

SIGNALING SYSTEM FOR RAILWAY TRAlNS.

APPLICATION FILED FEB. 24. 1912.

Patented July 27, 1915.

2 SHEETS-SHEET I.

E. H. BUUDWIN.

SIGNALING SYSTEM FOR RAILWAY TRAINS.

APPLICATION HLED FEB24. 1912.

T 14:8 1%2Q Patented-filly 2?, 1915;

2 SHEETS-SHEET 2.

. and B. telephones located in different parts time EDWARD H. BOUDWIN;0P PHILADELPHIA, PENNSYLVANIA, ASSIGNOR- OF ONE- SIXTH TO DANIEL W.HARNER, ONE-SIXTH TO ROBERT L. WOBSING, ONE-SIXTH T0 CARL M. GAGE, ANDONE-SIXTH T0 JAMES PPoUTs, ALL OF PHILADELPHIA, PENNSYLVANIA, ANDONE-SIXTH T0 AMBROSE E. YOHN, 0F HUNTINGDON, PENN- SYLVANIA.

SIGNALING SYSTEM FOR RAILWAY-TRAINS.

Application filed February 24, 1912.

T 0 all whom it may concern:

Be it known that I, EDWARD H. BoUDwIN, a citizen of the United States,residing at Philadelphia, Philadelphia county, and State ofPennsylvania, have invented and discovered certain new and usefulImprovements in Signaling Systems for Railway- Trains, of which thefollowing is a specification.

said invention consists in a further development of and certainmodification in the construction and arrangen'ient of parts of atelephone system for railway trains. of the same general characterasthat forming the subject matter of my application #661722, filedNovember 27, 1911, -whercby the apparatus is simplified and variousadvantages secured, all as will be hereinafter more fully described andclaimed.

Referring to theaccompanying drawings which are made a part hereof andon which similar reference characters indicate similar parts, Figure lis a diagrammatic view showing my invention as. applied in the train,Fig. '12 an underside plan view of the same, Fig. 3 a detailed viewshowing the connection between two component parts of a train,-I*ig. adetailed view on an enlarged scale showing a portion of the flexiblesection of the air-hose. or train line. of the approved form. Figs. 5and 6 detailed views showing modified forms. and, Figs. 7, S. 9, and 10.detailed views of several parts on an enlarged scale.

In said drawings the portions marked A represent the d'itfcrent portionsof the train such as the cars, locomotive, tender, etc.',

of the train.

The train is equipped with an air-pipe line 10, which is usually carriedon the frame. of the cars, as mav be most convenient according to thestyle of car with which it is employed. Each car carries a sectionfitted with an ordinary or any approved form of angle cock 11 on eachend. Flexible hose sections 12 connect the line from car to car asusual. Each section of hose 12 is provided with a hose nipple 13 on oneend and a hose coupling 14 on the Mimi. These several parts are all, inthe Specification of Letters Patent.

Patented July 2'7, 1915.

Serial No. 679,732.

main, of an ordinary or approved form. The pipe sections are mounted onthe train with hangers 01' supports 17, or such as commonly employed ormay be found appropriate. The train line. however, is in sulated fromthe other parts, such as the pump, reservoir, and air controller. Thisinsulation is of any preferred form. a fibre, or other insulatingbushing 16 mounted around the pipe 10 within the hangers 17 beingsuitable for the purpose. T's 18 are mounted in the line for theconnection of branches 30 leading to the reservoir 31, pump, etc. Abushing of insulating material. such as mica compound,"is-fornied withinterior and exterior screw threads, being screwed into thescrew-threaded openings in T 18 and pipe 31 being screwed into theinterior thereof. Said bushing is formed with an annular flange 7' whichextends bevond the boss on T 18 through which the perforation is formedto guard against bridging" around the insulation by water, etc. By thismeans the train line is entirely insulated from the other parts of thecar from end to end of the train. Each hose section 12 has a conductor.such as a wire 15. either embedded in its wall, as shown in Fig. 4.inclosed within the hose as shown in Fig. 5. or surrounding the hose asshown in Fig. 6. In either case the ends of the conductor arerespectively connected to the. hose coupling 14; at one end and the hosenipple 13 at the other. so that when the hose coupling is connected ametallic circuit is established from end to end of the train. I

Telephone B, including battery and other necessary parts, may be locatedin the locomotive and at other points throughout the train. whereverdesired. and connected by a wire 20 with the train line and another wire21 to some metallic base that is in good metallic communication with therails. thus establishinga complete electrical circuit. one side of whichis. in the main. the/train line and the other side of which is the rail,thus avoiding the use of wiring entirely except through flexible hosesections and from the telephones, as indicated.

\Vhile l have shown the wire in Figs. 4, and (l as spirally arranged itwill be understoml. of course, that it may be run through the hose in astraight, or any other direction, preferred. The spiral form isconsidered more durable and less liable to become broken and for thisreason is shown as the preferred form. Other modifications in detailsmay be made without departing from my said invention.

Having thus fully described my said invention. what I claim as new, anddesire to secure by Letters Patent is:

1. A telephone system for railway trains consisting of a telephone ineach component part of the train, a train-line extending throughout thelength of each component part of the train and insulated from metalliccontact with its supports, couplings conneeting said train-line from onecomponent part of the train to the other carrying metallic connectionsfor completing a metallic conductor throughout the entire length of thetrain. a wire connecting one side of each of said telephones to saidtrain-line, a second wire for grounding the other side of each of saidtelephones, a battery in the circuit. and signaling means, wherebycommunication may be had between any component part of the train and anyother component part of the train, substantially as set forth.

A telephone system for railway trains comprising telephones locatedthroughout the train. a metallic circuit. one side of which is the trainline and the other side of which is the track, means for supporting saidtrain line and connecting it with the air system including insulationbetween said train line and said means. and metallic connections betweenthe different sections of the train line connected with the ordinarycouplings thereof, substantially as set forth.

3. 1X telephone system for railway trains comprising the train lineextending from end to end of each component part of the train andinsulated from metallic contact therewith, couplings for connecting thetrain line of one component part with the train line of adjacentcomponent parts, a

telephone located in each component part of the train, a wire connectingeach of said telephones with its respective section of train line, asecond wire for grounding the other terminal of each telephone. abattery located in one of the component parts of the train and connectedin the circuit, and appropriate switches. hereby any number of sectionsmay be added to or disconnected from the train without interfering withsaid telephone system, substantially as set forth.

4. A telephone system for railway trains comprising telephones locatedin different parts of the train', a train line connecting from the pointwhere one telephone is located to a point where another telephone islocated. metallic connections from end to end of said train line,supports for said train line insulated therefrom, a conductor connectingone side of the telephones with said train line, and another conductorconnecting the other side of the telephones with a part in metallicCOIIllllllIllCtltlOl'l with the track, substantially as set forth.

In witness whereof, I have hereunto set my hand and seal at'lVashington,District of Columbia. this twenty second day of February. A. l).nineteen hundred and twelve EDlVARl) H. BOUDlVIN. [L.s.] Vitnesses:

E. \V. Bnanronn, FHA N K FULLER.

